Using SPME fibers and Tenax to predict the bioavailability of pyrethroids and chlorpyrifos in field sediments

被引：28

作者：

Harwood, Amanda D. ^{[1
,2
]}

Landrum, Peter F. ^{[1
,2
]}

Weston, Donald P. ^{[3
]}

Lydy, Michael J. ^{[1
,2
]}

机构：

[1] So Illinois Univ, Fisheries & Illinois Aquaculture Ctr, Carbondale, IL 62901 USA

[2] So Illinois Univ, Dept Zool, Carbondale, IL 62901 USA

[3] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA

来源：

ENVIRONMENTAL POLLUTION | 2013年 / 173卷

关键词：

Bioavailability; Solid phase microextraction; Tenax; Pyrethroids; Field sediments; IDENTIFICATION EVALUATION TOOLS; SOLID-PHASE MICROEXTRACTION; TOXICITY; INSECTICIDES; URBAN; PESTICIDES; CALIFORNIA; AVAILABILITY; PERMETHRIN; EXTRACTION;

D O I：

10.1016/j.envpol.2012.09.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The presence of pyrethroids in both urban and agricultural sediments at levels lethal to invertebrates has been well documented. However, variations in bioavailability among sediments make accurate predictions of toxicity based on whole sediment concentrations difficult. A proposed solution to this problem is the use of bioavailability-based estimates, such as solid phase microextraction (SPME) fibers and Tenax beads. This study compared three methods to assess the bioavailability and ultimately toxicity of pyrethroid pesticides including field-deployed SPME fibers, laboratory-exposed SPME fibers, and a 24-h Tenax extraction. The objective of the current study was to compare the ability of these methods to quantify the bioavailable fraction of pyrethroids in contaminated field sediments that were toxic to benthic invertebrates. In general, Tenax proved a more sensitive method than SPME fibers and a correlation between Tenax extractable concentrations and mortality was observed. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：47 / 51

页数：5

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